Ok - most DID people get a lot of diagnoses first. I had 5 before this one. And people who don't believe in or know of DID/MPD are going to label it schizophrenic. DID (from my understanding and a lot of reading) is "curable" or at least one can deal with it as the parts start having communication with each other. Memory can fill in, cooperation can happen... things improve.
You might do some DID esearch, highlight the things that you are experiencing, and take it in to that T. THey can't help with what they don't know.
My current T knows very little about DID also (she's a psych and a PMHNP like your former one) so i bring her everything i can get my hands on; books, articles, things i see online... my journals... everything.

When i was trying to move, my littles (there are several) went into tantrums. I didn't understand why my efforts were being sabotaged, but it was because we moved a lot as a kid and that was when a lot of bad things happened. THe kids associated safety with certain things and panicked at the thought of those changing.

Hope you're ok out there.... Kiya